Mordant azo dye and process of making same.



. 'Making Same,

' dyestufis can be f d1azo-comp ounds of ortho-aminophenol "and wherein X andY means 1 :6 and .1 :7 naphthylamin sulfonic acids, or

To all whom it may concern:

I UNIT D STATES T WE'.

"KARL SOHNITZSPAHN, OF OFFENBACH-ON-THE-MAIN. GERMANY, ASSIGNOR TO CORPORA- TION OF GHEMISGTTE FABRIK GRIESHElM-ELEKTRON, OF 'FRANKFORT-ON-THE-MAIN,

- GERMANY.

I No. 887,348.

g. Be it known that I, KARL'SoHNrrZsPAHN, doctor of' philosophy, chemist, a'subject of the German Emperor, and resident of Offenbach-on the-Main, Germany, whose post-office address is Obermainstrasse No. 81,, have invented new and useful Improvements in Mordant Azo Dyestufis and Processes of of which the following is a specification. l

I have found that valuable mordant azo produced by combining the its derivat ves of the generalformula:

with hetero nuclear aryl-alpha-naphthylamin-beta-sulfonic acids, for example aryl with the mizgture obtained by arylizing the technical product ofboth acids. The red to violet tints produced by these ortho-oxyazodyestuffs on wool from acid bath are changed by subsequent treatment with chromates in Specification of Letters Patent. Application filed January 7. 1908.

' aqueous solution a diazotized by means of 6.9 parts of sodium nitrite. 'An aqueous solution of- 32.1 parts of the sodium salt of the technical product of phenyl-1:6-and-1z7-naphthylamm sul- MoRnAN'r Azo DYE'AND PROCESS, OF MAKING SAME.

7 Patented May-l2, 1908. Serial No. $09,657.

I fonic acid is poured into the solution of the (ham-compound. The formation of dyestuf'l' begins at once and may be finished by stirring for several hours at a temperature of about 30 C. The coloring matter may be precipitatedby means of common salt, fil tered. oil, dried and ground with 6 I arts of calcined. sodium carbonate. tained dyestufl a black brown powder dissolving in concentrated sulfuric acid with a blue, in water with a bordeaux color.

aqueous solution a blue violet preciitate is obtained and a violet brown one by t re addition of caustic soda lye. The dyestufi dyes wool from acid bath bordeaux shades which by subsequent treatment with, chro nrates are changed into black ones.

Example II A solution of 21 parts ofthe sodium salt NO :NH :Cl:OH=6:2:4:1 is diazotized by means of 35 parts of hydrochloric acid 20B. and 6.9 parts of sodium nitrite. The diazosolution is addedto' an a ueous solution of 33.5 parts of the sodium sa t of the technical of nitro-chloro-aminophen0L The t ius obthe addition of hydrochloric acid to the product of paratolyl-vl :6-and-1:7-naphtl1yl amin 'sulfonic acid containing 27.2 parts of crystallized sodium acetate. The formation of the dyestufi' begins at once and may be finished by stirring for several hours at a temperature of about 2030 O. The separated dyestufi is filtered ofl', dried and ground with 6 parts of calcined sodium carbonate. It is a black brown powder dissolving in concentrated sulfuric acid with a blue, and in water with a violet color. By the addition of hydrochloric acid to the blue violet preci itate is obtained and abrown violet one by t e addition of caustic soda lye. The dyestufl' dyes wool from acid bath violet tints whichfbyj subsequent treatment with chromates are changed into bright blue black ones.

The tinctorial properties of a greater number of the new dyestufis may be shown by the following table:

Dyestutf Dyes wool by subsequent obtainedby combining from acid 1 went' thediazocompouml of 1th but; l fl \uth chromates:

Ortlio-aminoplienol Phenyl-lzG-and- Yellow red' Violet. lz'i-naphtliyl- 21-min sulionic acid. I Chloroaminophenol lo Red .Black- (l:i IH :OH=4:2:l. violet. N roamino lienol ;....do Red Brown 2N11 )ll:=4:2:l. violet. Picramieacid ..do Red Brown.

. brown. Chloroamino lienol- ....do Bordeaux. Violet.

sullonic acid IFSH OlEI:SO3H=4:2:1:6. Nitrc-aminophenol Paratolyl-ltfi- Violet Blue NO 2NHZOH=5122L and-1:7-naphblack.

' thyla-min sultonic acid. Acetamino-o amino- Paratolyl-lzfi- Red Violetphenol NH.CO CH and-lIT-naphblack. 'NHQ:OH=4:2:1. thylamin sulfonic acid. Diochloroaminoolienol Paratolyl-1':6- Bordeaux. Violet 'ClzCl N'H O =4z6: aud-lz'i-naphblack. 2:1. thylamin sull Ionic acid. I Nitrochloroaminophe- .....do Violet Blue 1101 N0zzQlzNH zOH 1 black. fi:4:2:1. Nitroamino -poxy- ;.do... Violet Blue benzoic acid. '5 l black. Amino cresol NH t OrthoaniSyl-ltfii Brown.... Black OH:CH :3:4:1. l and-lfl-nephbrown.

thylamin sulionic acid. i Nitroamino cresol Xylyl-1:6=-andg Bordeaux. Violet."

NOyNH-luOHICHF 11-7 -napht hyl- 523:4:1. amin sulionic acid -(obtained I from technical i xylidin).

Now what I'claim and desire to secure by Letters Patent is the following: v 1. The process of manufacturing new mordant monoazo dyestufis, which consists .T 1n combining the diazo. compounds of orthoamino-phenol bodies of the general formula: o H,.X.Y.o,I I.N,H, wherein X and Y means i I I.CH .C1.NO,.COOHSQHNHCOOH,

with heteronuclear aryl alpha-naphthylamin-beta-sulfonic acids.

- 2..As a new article of manufacture, the mordant monoazo dyestuffs obtained by com bining the diazocompounds of ortho-amino- :phenol bodies of the general formula:

O6H2.X.Y.O1H.N2H2 wherein X and Y may be ILCHQLNO COOH.sO HNHCO CH 7 with heteronuclear aryl alpha-naphthylamin forming brown black powders, dissolving in concentrated sulfonic-acid with a 'violet to blue, and inwater with a brownish red to violet color, in which solution a violet to blue recipitate is obtained by the addition of ydrochloric acid and a brown violet one by the additionof caustic soda lye, dyeing wool from an acid bath red to violet tints, which by subsequent treatment with chromates are changed'into-violet to black ones.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two witnesses, this twenty fourth day of December 1907.

KARL SCHNITZSPAHN.

VVitnesses TIER-MANN VVEIL, EVA SATTLER- 55 beta-sulfonic acids, the sodium salts thereof 

